take a 2 liter bottle and put lil rolled up balls of aluminum foil in it (about up to the label in the bottle) take The Works toilet bowl cleaner (found at K-Mart) and pour about 1 1/2 cups in. close lid tightly. wait for it to start to smoke then throw. (very fun to duct tape G.I joes to it and watch them blow apart)(or u could throw in a backseat of a car and blow acid all over)